Rattle That Lock

The title track and lead single of Daid Gilmour's fourth solo album, "Rattle That Lock" features the Liberty Choir, along with soul singer Mica Paris, who had nine UK Top 40 hits in the '80s and '90s. Louise Clare Marshall, who also sung on "Louder Than Words," the closing track of Pink Floyd's The Endless River album, also makes an appearance.

The song makes use of the four notes that precede announcements at French SNCF railway stations, which Gilmour recorded on his iPhone at Aix-en-Provence station. "It's an anticipatory jingle that lets you know there's an announcement about to be made," Gilmour told the Canadian Postmedia Network, of the SNCF chime he used. "It was inspiration for the music of this song. And when I go to airports or to train stations in England, they have really, dull, tedious jingles, that precede announcements and the same in the States usually." "But when you go to France they have this great one that makes you want to dance," he continued. "So while I was in a train station in France I recorded the sound on my iPhone and took it home and started turning it into a song... My manager had to go and get clearance from the guy who wrote it in France so we could use it."

The lyrics were penned by Gilmour's novelist wife Polly Samson. They were inspired by Book II of John Milton's Paradise Lost, which is also featured in her novel, The Kindness.